Skip to main content

Table 3 Result of exergy analysis day 1 (tomato)

From: Potential assessment and experimental analysis of solar vegetable dryer: in case of northern Ethiopia

Time (s) \({\text{Ex}}_{\text{dco}}\)(kJ/kg) \({\text{Ex}}_{\text{dci}}\)(kJ/kg) \({\text{Ex}}_{\text{loss}}\)(kJ/kg) \({\text{Ex}}_{\text{out}}\) (w) \({\text{Ex}}_{\text{rad}}\) (w) \(\eta_{{{\text{Ex}}.{\text{solar}}}}\) (%) \(\eta_{{{\text{Ex}}.{\text{do}}}}\)(%) \(\eta_{{{\text{Ex}}.{\text{net}}}}\) (%) Ta (°C) Tdco (°C) Tdci (°C) \(\bar{c}_{p}\)(kJ/kg)
0 0.165 0.237 0.072 234.74 56.4 24.5 34.5 36.1 1.0052 1.0052
3600 0.210 0.254 0.044 80.2 166.30 48.2 79.05 38.1 27.5 38.8 40 1.0054 1.0054
7200 0.296 0.434 0.138 125.4 209.80 59.7 53.35 31,8 27.6 41.1 44 1.0054 1.0055
10,800 1.073 1.120 0.047 152.7 248.80 61.4 95.6 58.7 30.1 53.8 56.8 1.0059 1.0060
14,400 0.864 1.071 0.207 104.2 173.40 60.1 76.04 45.7 30.2 53.6 56.4 1.0059 1.0060
18,000 0.720 0.336 0.084 183.3 234.74 78.1 88.30 68.9 30.1 49.8 50.1 1.0057 1.0058
21,600 0.717 0.785 0.068 311.8 324.80 95.9 90.52 86.8 28 49.2 50.2 1.0057 1.0057
25,200 1.240 1.355 0.115 200.1 273.67 73.1 90.72 66.3 28.7 56.8 58.2 1.0059 1.0060
28,800 0.870 0.957 0.087 110.5 199.5 55.4 90.00 49.8 28.8 52.2 53.4 1.0058 1.0058
32,400 0.365 0.463 0.098 167.8 224.8 74.6 73.13 54.5 27.1 42.1 45.8 1.0055 1.0056
36,000 0.279 0.188 0.091 112.4 207.7 54.1 67.40 36.5 27 40.1 42.3 1.0054 1.0055
39,600 0.220 0.286 0.066 82.68 191.77 43.2 70.00 30.2 26.8 38.4 40.1 1.0053 1.0054